更新1:
f(x)=(x+2)/(x-3) find x when f(x)=4
When f(x)=4 (x+2)/(x-3)?
回答 (10)
2016-06-19 3:20 am
Plug in 4 for f(x)
4 = (x+2)/(x-3)
4x-12 = x+2
3x = 14
x = 14/3
4 = (x+2)/(x-3)
4x-12 = x+2
3x = 14
x = 14/3
2016-06-18 4:13 pm
f(x) = (x + 2)/(x - 3)
Since f (x) =4
4=(x + 2)/(x - 3)
4 (x - 3)= x + 2
4x - 12 = x + 2
4x - x = 12 + 2
3x = 14
x = 14/3
Since f (x) =4
4=(x + 2)/(x - 3)
4 (x - 3)= x + 2
4x - 12 = x + 2
4x - x = 12 + 2
3x = 14
x = 14/3
2016-06-18 7:24 pm
x = 14/3
2016-06-18 9:07 am
x + 2 = 4x - 12
14 = 3x
x = 14 / 3
14 = 3x
x = 14 / 3
2016-06-18 5:02 am
f(x) = (x + 2) / (x - 3)
When f(x) = 4 :
4 = (x + 2) / (x - 3)
4 (x - 3) = x + 2
4x - 12 = x + 2
3x = 14
x = 14/3
When f(x) = 4 :
4 = (x + 2) / (x - 3)
4 (x - 3) = x + 2
4x - 12 = x + 2
3x = 14
x = 14/3
2016-06-21 9:08 am
f ( x ) = 4 = ( x + 2 ) / ( x - 3 ) ,
then 4 ( x -3 ) = ( x +2 ) , so 4x - 12 = x + 2 , therefore , 4x-x = 12 + 2 or 3x = 14 , so x = 14/3 .
Ans : x = 14/3 when f( x ) = 4 for ( x + 2 ) / ( x - 3 )
then 4 ( x -3 ) = ( x +2 ) , so 4x - 12 = x + 2 , therefore , 4x-x = 12 + 2 or 3x = 14 , so x = 14/3 .
Ans : x = 14/3 when f( x ) = 4 for ( x + 2 ) / ( x - 3 )
2016-06-21 8:32 am
Question f(x) = (x + 2) / (x - 3)
given f(x)=4
ans f(x) = (x + 2) / (x - 3)
4 = (x + 2) / (x - 3)
4 (x - 3) = x + 2
4x - 12 = x + 2
3x = 14
x = 14/3
given f(x)=4
ans f(x) = (x + 2) / (x - 3)
4 = (x + 2) / (x - 3)
4 (x - 3) = x + 2
4x - 12 = x + 2
3x = 14
x = 14/3
2016-06-19 3:28 am
f(x) = 4
(x + 2)/(x - 3) = 4
3x = 14
x = 14/3
(x + 2)/(x - 3) = 4
3x = 14
x = 14/3
2016-06-18 5:02 am
NEVER...ah update changed f...x = 14/3
2016-06-18 4:49 am
Where's the rest of the question?
收錄日期: 2021-04-18 15:07:53
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160617202924AA970DV